diff --git a/.gitignore b/.gitignore
index 8572331..d8919f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@ test/libdrampowertest/library_test
 *.gcda
 traces/*
 traces.zip
+.sconf_temp/
+.sconsign.dblite
diff --git a/test/test.py b/test/test.py
index df3cad0..a953bc4 100644
--- a/test/test.py
+++ b/test/test.py
@@ -159,7 +159,7 @@ def test_make_clean_removes_compiler_output(self):
         pattern = '*.[oad]'
         for root, dirnames, files in os.walk('.'):
             for f in files:
-                count += 1 if fnmatch.fnmatch(f, pattern) else 0
+                count += 1 if fnmatch.fnmatch(f, pattern) and not f.startswith('conftest') else 0
         self.assertEqual(count, 0, msg=self.shortDescription())
 
 if __name__ == '__main__':